Carton-routing machine



Aug. 18, w25. 1,549,592

N. SANDBERG CARTON ROUTING MACHNE FlSd NOV. 7. -192 I NV EN TGR.

"F W97@ 5mm@ 5 ATTO@ Ys.

Patented Ang. 18, 1925.

UN I T ED STA T ES PATENT 4O FI C E.

NELS SANDBERG, 0F lST. PAUL, MINNESQTA, ASSIGNOR TO WALDORF PAPERPRODUCTS COMPANY, A. CORPORATION OF MINNESOTA.

celeron-nocturne MACHINE.

Application -led November 7, 1924.

T 0 all whom 25 may canoe-ra:

Be it known that I, Nnns SANnsni-io, acitizen of the United States,residing `at St. Paul, in the countyof Ramsey and State of Minnesota,`have invented new and useful Improvements in a Carton-Routing Machine.

This invention relates to machines used in the manufacture of cartonsfor perfoianing the operation known as routing which `consists inremoving or knocking out die-cut waste portionsfof carton blanks,preparatory `to folding and securing` the blanks in bor;

form.

Ags is well known, it is necessary to forcibly yremove certain wasteportions of the blanks after the `outlines of the cartons have beenmarked by suitable dies. Heretofore, the greater part of this routingwork has been done by hand, although machines which simplify the wor-kto a certain extent have been devised. These old machines are notefficient, however, for use in large factories where frequentadjustments must be made to adapt fthe machine for use lupon carto-ns ofwidely differing form and it is also true that theold machines known toapplicant do not afford sufficiently accurate placing of the routingelements to properly and cleanly remove some of the waste portions.

It is my object vto obviate these defects by providing a machine of thiskind having a series of routing elements which are inde pendently andquickly movable to the exact positions `necessary to efficiently knockout die-cut portion-sof cartons.

This invention also includes certain other features of constructionwhich will be more fully pointed out in the following speci-fication andclaims.

In the accompanying drawings, 1 have il lustrated the best form of mydevice at present known to me. Referring to the drawings, Figure 1 is aplan view of my machine; 2 is a fragmentary, transverse section of thesame and 3 isa section through one of the routing elements and operatingmechanism taken on the line 3 3 of Fig. 2.

My machine is supported in a suitable frame having end standards 4connected by a pair of rigid, threaded rods 5 and supporting a driveshaft 6, which is parallel to the rods 5. Pivoted upon this shaft 6 is aseries of routing discs 7, of like size and having blunt teeth upontheir peripheries,

Serial No. 748,507.

adapted to knock out die out waste portions of carton blanks 3. Asupport 8 foreach of the discs 7 is freely pivoted upon the shaft 6 undhas a `ifournal bearing for a short shaft E), carrying the disc 7. rThesupport 8 is a plate in the form of a segment, having arcuate slot-s 10,through which `the rods `.5 extend. Pairs of nuts 11 threaded on therods 5 adjacent to opposite faces of each of the supports 8 are adaptedto be manipulated to grip said supports and hold them in any desiredarcuate positions. To sevorally .drive the routing discs 7, mountsprocket wheels 12 and 13 upon the shafts 6 and 9, respectively,andconnect said wheels by an endless chain 14. The sprocket wheels 12are caused to rotate with the shaft 6 by a longitudinal key 15' on saidshaft, and said wheel is `slidable longitudinal-ly upon the shaft J6.

Obviously, the details of construction of the bearings at the upper .andlower ends of the supports 8 maybe varied without departing from thespirit of my invention, Abut l prefer to form each o-f the sprockets 12(as shown in Fig. 3) with a long` hub 15 and to place a bushing 16between the outer periphery of said hub and the bore of the support 8. Anut 1T is provided to maintain the proper' positions ofthe wheel 12 andbushing 16. At the lower extremity of-each support 8, the routing disc7' is secured to a flange 18 on the shaft 9, and a bushing 1,9 is placedbetween said shaft and the bore 'of the support 8. .The sprocket 13 isrigidly secured to a threaded end 20 of the shaft 9. To drive the shaft6, a pulley 21 is fined upon said shaft near the outer face of one ofthe standards 4.

A suitable feed carriage for a stack of the cartons S is shown in Figs.1 and 2. Thus, a table 22 is made slidable vertically in guide ways 23.This table 22 is adapted to support a receptacle 24 for the blanks 3,the receptacle having sides 25 arranged to fit about three sides of thecarton blanks, and being formed with slots 26, as shown in Fig. 1, toreceive the routing discs 7. rThe slots 26 are disposed 4to registerwith the die out portions to be remo-ved from the carton blanks. Counterweights 27, provided with cables 28 passing ove,l pulleys 29, areadapted to facilitate vertical movement of the table 22 carrying theblanks. As will be readily understood, the receptacle .24 is so placedupon the table 22 that the Waste portions to be removed from the cartonblanks proiect above the several routing discs 7.

Operation.

The machine is prepared to operate upon cartons of a predetermined shapeby first constructing a receptacle 24 having slots 26 which registerWith the die cut portions to be removed. The receptacle 24 is noivsecured upon the table 22, as shown in Fig. 2. To adjust the positionsof the discs the nuts 11. aie loosened and rotated upon the rods 5 tocarry the supports 8 longitudinally upon the shaft G. Thus, the discs Zare moved to proper position opposite the several slots 26. Beforetightening the nuts 11, the supports 8 are pivoted upon the shaft 6 tobring one of the discs 7 into each of the slots 2G with the periphery ofthe disc er:- tending to the innermost extremity of the Waste portion tobe removed. rihe nuts 11 are finally tightened against the faces of thesupports 8 to firmly hold the routing discs in operating position. lVhenthe pulley 21 is driven from a suitable source of power in the directionindicated by an arrowv in Fig. 2, the shaft 6 will drive the shafts 9through the sprocket Wheels 12 and 13 and chains l-t. A stack of thecartons to be operated upon is now placed in the receptacle 24. when thesupport 22 carrying said receptacle may be depressed to cause the teethof the discs .7 to knock out the Waste portions of the cartons.

As will now be readily understood, by making the discs 7 extensible tothe innermost extremity of each portion to be knocked ont, thedifliculty heretofore encountered of tearing aivay only a part of theWaste material is avoided. By making provision for accurate, individualadjustment of the routing disc positions, I guard against mutilating thecartons, as frequently occ-urs When the rout-ing` discs are not properlyplaced relative to the Waste portions to be removed. Furthermore. theWork of preparing the present machine for use upon cartons of differingshapes is greatly simplified as compared with prior machines known toapplicant. I also do away with the necessity for a plurality ofinterchangeable sets of routing` discs of differing sizes.

-Iaving described my invention What I claim as new and desire to protectby Letters Patent is:

1. In a machine of the class described, a revoluble shaft, a pluralityof routing discs severally movable in arcs about said shaft, andrevoluble about centers which are ofiset from said shaft, a plurality ofknocking elements formed on the periphery of each of said discs toengage and remove die-cut portions of carton blanks, means for securingthe several discs in didering arcuate positions relative to said shaft,and means operatively connecting said shaft with the several routingdiscs.

2. In a machine of the class describedt a revoluble shaft, a pluralityof supports foi` routing discs pivoted upon said shaft, routing discsseverally revoluble upon said supports and offset from said shaftthereon, a plurality of knocking elements formed on the periphery ofeach of said discs to engage and remove die-cut portions of cartonblanks, independent means for securing the several supports in differingangular positions upon said shaft, and means operatively connecting saidshaft with the several routing discs.

In a machine of the class described, a carriage for a plurality ofcarton blanks, a series of supports for routing discs severallyv movabletovvard and aivay from said carriage, rotating discs severally revolubleupon said supports, a plurality of knocking` elements formed on theperiphery of each of sait. discs to engage and remove die-cut portionsof carton blanks, means for securing the several supports in differingpositions relative to said carriage, and means for rotating the severalrouting discs on said supports.

4. In a machine of the class described, a frame, a shaft and a rodextending in parallel relation one to the other in said frame, a supportfor a routing disc pivoted upon said shaft and formed With an arcuateslot adapted to receive said rod, means disposed on said rod to engagesaid support, a disc having peripheral teeth revolubly carried on saidsupport, and means operatively connected to said shaft for rotating saiddisc.

5. routing machine comprising a shaft and a rod extending in parallelrelation one to the other, a support for a routing disc pivoted uponsaid shaft and slidable longitudinally on said rod and shaft, saidsupport being formed with an arcuate slot adapted to receive said rod,means on said rod adapted to engage said support, a routing discrevoluble upon said support, and means operatively connected to saidshaft for rotating said disc therefrom.

6. A routing machine comprising, a frame, a horizontal shaft and athreaded rod eX- tending in parallel relation one to the other in saidframe., a series of supports for routing discs severally pivoted uponsaid shaft and formed with arcuate slots adapted to receive said rod,nuts threaded on said rod and arranged to engage opposite sides of saidsupports, a routing disc revoluble upon each of said supports, drivingmeans severally connecting said shaft to said discs and a feed carriageadapted to deliver a stack of carton blanks to said discs.

In testimony whereof I have hereunto signed my name to this specication.

NELS SANDBERG.-

llO

